0.5.x: Remove everything deprecated #2869

Job	Run time
alternative_targets (ubuntu-latest, wasm32-unknown-emscripten)	15s
features_check (ubuntu-latest)	5m 29s
no_std (ubuntu-latest, thumbv6m-none-eabi)	12s
alternative_targets (ubuntu-latest, aarch64-apple-ios)	21s
features_check (macos-latest)	14m 14s
rust_msrv (ubuntu-latest)	31s
alternative_targets (ubuntu-latest, aarch64-linux-android)	10s
no_std (ubuntu-latest, x86_64-fortanix-unknown-sgx)	20s
features_check (windows-latest)	9m 9s
rust_versions (ubuntu-latest, stable)	15s
rust_versions (ubuntu-latest, beta)	20s
check-docs	19s
timezones (ubuntu-latest, ACST-9:30)	10s
rust_versions (ubuntu-latest, nightly)	24s
timezones (ubuntu-latest, EST4)	15s
cross-targets (x86_64-sun-solaris)	1m 9s
timezones (ubuntu-latest, UTC0)	9s
timezones (ubuntu-latest, Asia/Katmandu)	17s
test_wasi (ubuntu-latest, wasm32-wasi)	24s
cross-tests (ubuntu-latest)	1m 11s
timezones (macos-latest, ACST-9:30)	20s
timezones (macos-latest, EST4)	1s
timezones (macos-latest, UTC0)	1s
test_wasm (ubuntu-latest)	11s
timezones (macos-latest, Asia/Katmandu)	1s
timezones (windows-latest, ACST-9:30)	1s
timezones (windows-latest, EST4)	8s
timezones (windows-latest, UTC0)	1s
timezones (windows-latest, Asia/Katmandu)	1s
	36m 19s

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